Method and apparatus for producing colored photographic pictures



J. H. CHRISTENSEN. METHOD AND APPARATUS FOR PRODUCING COLORED PHOTOGRAPHIC PICTURES.

APPLICATION FILED Au'e.2, 131s.

Patented Mar. 29, 1921.

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To all wfwm may cohceini UNITED sTAT-ES "PATENT o-F -"ice.

ens Runner; CHRISTENSEN, or, HOLTE, DENMARK.

.un'rnon Am) renames m. rnonuome oonong-in rnoroonernr'c PIcrUnI-is.

. Applicdtion filed Augusta, 1918. Serial No. 247,981.

Be it known that 1, Jam HERMAN Crims- TENSEN, a subject of the King of Denmark;

residing at Holte, Denmark, have invented new and useful Im rovements in Methods and Apparatus for reducing Colored Photographic Pictures; and'I do hereby declare the following to be a full, clear, and exact description of the same. r

The invention has for its objecta method of producing a colored picture through gluing together of two colored films one of which contains two of the part pictures while the other contains the third one and, in carrying out the method, at least one of the said films before" the exposure is mounted in a frame in which it, remains during the chemical treatmentsandthe drying, and

from. which it is removed only after. having been glued tothe other film. the film ,may remain in its frame after the gluing together 'so that'the latter becomes aframe for the completed picture. In such case the film and framearesupplied as a unit by the factory. v v

The object of such frames is. to prevent the films from contracting or from. being with a green sensitive emulsion which may k v I contain ared screen-dye. Furthermore a piece of paper is provided with a red-sensi tive emulsion, serving for the production of a blue art picture. On the annexed drawing Figure 1 shows a form of a double frame in opened condition in which frame the. paper can, be stretched, v

Fig. 2 a section through the same, F ig.- 3 a double frame in opened conditionmeant for accommodating the collodion film referred to above, Fig. 4 a section through the same and Fig. 5 a section through the two double frames laid together and provided with. film and paper respectively, on a. larger scale.

The double frame shown in Figs. 1 and 2 consists of the frame-pieces a, and consonie other suitable means.

. holes d for registerin In some cases Specification o f Letters Patent. t te Man 29,

.nected' through-hinges b and they can be kept together when closed .by a clip 7 or The framepiece 0 has aas-shown and both ofthe frame pieces have ms. The double frame s I) connected through hinges k and they can be heldin the closed position bya clip a. The

frame piece holes m and the frame piece it registering pins .n as shown. The

e parts are swung together.

iVhen the method is to be. carried into effeet the paper p, Fig. 5, is fixed between the parts of 'theframe shown in Figs. 1 and'2 so that it is stretched over the flange e and has the coated side up and the edges of the paper are squeezed between the frame pieces.

The collodion film g, Fig. 5, coated on both sides is held stretched between the frame pieces g and. It with the yellow film turned toward the frame piece h. These various operations are effected in ruby light, in some cases in a dark room. The two double' frames are now laidtogether the pins n being inserted through the holes d so that-the two films get in close contact with one anprotruding part or flange e' own in Figs.- 3' and i consists of two flat framepieces g'and h.

' holes m are elongated in .order to 'allow the passage of the pins'when the fra other as illustrated in Fig. 5. The exposure can now be effected either in a camera or through a colored picture which is laid on the-film g in the frame piece it; After the exposure the two frames are separated and the films are developed and treated further while supported in their frames. The pictures may by Way of example be converted into pictures of silver-iodid and colored with the respective dyes wanted in known, manner. The frame pieces 9 and bin connection with the film in question form flat trays into which the solution of the dye'in question is poured one side bein colored at a time each with its own dye. A ter coloring and in some cases fixation and mordication and washing out ofthe films they are-dried always remaining in their frames and after drying the paper is provided with glue and the film;

is applied to the same the frames being put together again as shown in Fig. 5 and the film and paper being pressed together. As means for gluing the films together glycerin or another substance which will not make the two films in question soft may be used.

't is desired to produce a transparent colored picture thepaper must be replaced I by a glass or celluloid-plate which in most cases need not be mounted in a frame. In

such case one single double frame only is.

used in which is mounted the film coated on both sides. The celluloid 'plate'mustthen have holes corresponding tothe-registering pins on the, frame.

: In case an opaque white 'glass or cellu "loid-plate' is used a picture is obtained which may be-seen in reflected light in: the same 1" manner as a :picture on paper.

mountings under tension, and'fastening said Having thus fully. described my fin'vntion, I claim as-new-and desire to secure by Letters Patent: r

e 1. The method of producing colored pictures which comprises; mounting a pair of;

films separately and :under tension, superposing said -films with their. faces contiguous, exposing said-film s, separating saidfilms, treating each film separately, reassembling the films in' the same superposed positionwithout removing them from their films together- :while so superposed under tension. I

2. The method ofproducing a colored picture which consists in coating one, film on both sides, and another film,on oneside, mounting saidfilms under tension, .superposingsaidfilms with their faces contigu ouS, posing said films while so superposed, separating said films, treating each film'sepa- -rately,' -1 :eas'sembling' the films in superposed position, and fastening said films'together whilej'so superposed andinj their original mounting. I

. 3. Apparatus for making colored pictures comprising a pain of double 'frames, said frames having means to cause them to register always in the same relative position-when superposed and for mounting a film under tension in each frame so that when the films I are superposed a-face of one film will -con tact with a face vof the other film.

Z 4. Apparatus for makingcolpred pictures.-

comprisingla pair ofdouble frames, means-- Apparatus for making ooloredpictures comprising a pair of double frames, means ,for mountinga film .under'tensi'on n eachof saiddouble frames', means on saiddouble frames "to cause them to alwaysregi'ster in the same relative position when superposed,

a'nd consisting'of pins on one. double frame engaging holes in the other double frame,

said frames being constructed to hold the films in such-a position that when sosuper posed the faces of the films will be in close contact. s In testimony whereof I have afli'xed my signature in presence oi two witnesses.

JENS HERMAN csms'rrussu 4 Witnesses: Y j

Cnorn V. SCHOU," 1 VIGGO BLoM." 

